. Report of draft gear tests, United State Railroad administration, Inspection and test section; . f gear construction, and the for-mulation therefrom of mathematical lawsof draft gear action. 136 Draft Gear Tests of the U. S. Railroad Administration o ca, <1 S-8 C/3 co /V/ U/AS- SO S7T/S- ox bnoH H3d S31/N ^ &/7QH *3c/ 9J7W •ff^K? +OOOKWSUVJ-Q 2 9SOTQ 02 xnoH yj^ sj7w H SUSJ{ AOVdM/ MO ® Rx % $ ±DYdH/-#\r) s t: JOJQ O/AXLg ¥ » lDVJU//-d\/J © dOJQ 8 $ JLO\/dH/-dVJ 11 2 ® il 1 77^ 7K^C£ © 3U0JLSQ/0L a&7<ysM07g S 77*y 7ba^ © !sSS ±H9IJ/\h JO © ^0 § 77^/ 7feZ£
. Report of draft gear tests, United State Railroad administration, Inspection and test section; . f gear construction, and the for-mulation therefrom of mathematical lawsof draft gear action. 136 Draft Gear Tests of the U. S. Railroad Administration o ca, <1 S-8 C/3 co /V/ U/AS- SO S7T/S- ox bnoH H3d S31/N ^ &/7QH *3c/ 9J7W •ff^K? +OOOKWSUVJ-Q 2 9SOTQ 02 xnoH yj^ sj7w H SUSJ{ AOVdM/ MO ® Rx % $ ±DYdH/-#\r) s t: JOJQ O/AXLg ¥ » lDVJU//-d\/J © dOJQ 8 $ JLO\/dH/-dVJ 11 2 ® il 1 77^ 7K^C£ © 3U0JLSQ/0L a&7<ysM07g S 77*y 7ba^ © !sSS ±H9IJ/\h JO © ^0 § 77^/ 7feZ££ © 3i <0 1 o 3Aij_yyvdh/oj © Si °0 * 13AVdJ_ ® CM © 1 <o <0 r r ^1In 5 y ti M eg Nl<0 M<o 5<o 8 <0 IS I i 5 S3 NdWP °J- Hdh/C HdW£ mw/J. &<s&7 138 Draft Gear Tests of the U. S. Railroad Administration. 2 3 4 S G M/LES /=>F/? HOUR. Fig. 68—Energy Curves for Cars of Various Weights, with Commercial Gear Capacities Indicated GRADING OF AVERAGE COMMERCIAL GEARS Any one familiar with draft gear oper-ation and testing can from the foregoingresults, and particularly from table , establish his own rating of the relative total merits of the types willdiffer, depending upon the importance at-tached to the several features of gear ac-tion. No one gear excells in all points. Onerepresents the highest capacity; another thehighest percentage of absorption; anotherthe highest degree of smoothness of tabulation, Fig. 69, has been pre-pared on the basis of the following rela-tive weights or percentages for the severalphases of gear performance: Capacity 50 points Smoothness of action 15 points Closing pressure 5 points Absorption 15 points Over-solid sturdiness 10 points Workmanship and General operation 5 points Total 100 points The gradings on the above basis are ma
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921
